We at Speed and Power want to make it as easy as possible for you to choose the right size. Therefore, we have chosen to follow the market and adapt our sizes to other brands, so our sizes can easily be perceived as "normal". We think that clothes should fit well and feel comfortable when you wear them. So in case of borderline cases, we recommend that you as a customer choose a larger size.
Remember that we all have different preferences, some want it properly tight, while others prefer a little less tight.